Loan and Security Agreement 2013 Loan and Security Agreement - First Amendment (Details) (Subsequent Event [Member], USD $)	0 Months Ended
	Feb. 28, 2013
Subsequent Event [Line Items]
Unused Capacity, Commitment Fee Percentage	1.00%
Collateral Fee	$ 20,000
Prior to first anniversary [Member]
Subsequent Event [Line Items]
Early termination fee	3.00%
Prior to second anniversary [Member]
Subsequent Event [Line Items]
Early termination fee	2.00%
Prior to third anniversary [Member]
Subsequent Event [Line Items]
Early termination fee	1.00%
First amendment [Member]
Subsequent Event [Line Items]
Unused Capacity, Commitment Fee Percentage	1.50%
Collateral Fee	2,500
Collertal fee (upon default)	5,000
Amendment fee	$ 200,000
First amendment [Member] | Prior to first anniversary [Member]
Subsequent Event [Line Items]
Early termination fee	5.00%
First amendment [Member] | Prior to second anniversary [Member]
Subsequent Event [Line Items]
Early termination fee	3.00%
First amendment [Member] | Prior to third anniversary [Member]
Subsequent Event [Line Items]
Early termination fee	2.00%